Input supply

[alizee]

Hello
I am using input AC 415v so if I need to add AC link capacitor so according to what
shall I choose value of this? can anybody explain?

 

[kchriste]

We cannot explain without further information. We can guess that you might be making a transformerless power supply and want to use capacitive reactance to drop the voltage. If so, we'd still need to know the required load voltage and current and the line frequency.

 

[alizee]

capacitor

We cannot explain without further information. We can guess that you might be making a transformerless power supply and want to use capacitive reactance to drop the voltage. If so, we'd still need to know the required load voltage and current and the line frequency.

This is not transformerless supply at i/p side supply R,Y,B I want to place capacitor further this supply is rectified and that is further connected to s/w power control semiconductors again converted back to AC and then to Load....i/p supply is baout 415-420VAC and primary current is arround 500A load is varying...

 

[blueroomelectronics]

Post your schematic.